Lock and latch



July 25, 1933.

S. T. ALLEN LOCK AND LATCH Filed Jan. 30, 1931 2 Sheets-Sheet l July 25,1933.

S. T. ALLEN LOCK AND LATCH Filed Jan. 50, 1951 2 Sheets-Sheet 2 "10 mycopending application SerialNo. 427 ,7 96, following description of thefinventionsp'ar- "-f Patented July 25,1933 ,f l i 11,919,763 A UNITEDSTATES PATENT oFFlcE g SHERMAN T. ALLEN, OF BEVERLY HILLS, .CALIFORNIALOCK AND LATCH.

Application filed January 30, 1931. Serial No. 512,396. i 1 l Thisinvention relates to doorlatches, and vmatically becomes disengagedJtrom theloc'khas for-an vobject the provision of an iming bolt whenvthedeviceis unlocked, thereproved type ofv latch and lock adapted to .belby permitting "continuedrotation o1' the key-l used advantageously inconjunction with vaoperated means-to that position in which the j "5rious types of closures, such as ordinary key may be removed therefromwithout inside and outside doors, oliice doors, and again locking` thedevice.

the doors used upon vehicles. The invention possesses other objects andThelatch of the present invention constiadvantageous features, some ofwhich, with tutes an improve-ment over that set torth 1n thoseenumerated', will be set 'forth inthe r iiled February 12, 1930. ticularembodiments which are illustrated in A more detailed 'object is thevprovision the drawings accompany-ing and forming a ot a door latchwherein the movable portions part of the specification. are carried byan integral basket structure 'Referring to the drawings: j r adapted to`be-let intoanotch in the edge of 1 Fig. 1 is a view inside elevation ofa por- -a door, and to be secured to the door by tion oi a door and itsassociated trame,`with means ol' escutcheon plates carried by the alatch and lock or" my inventionoperatively basket and movable relativelythereto only installed therein, portions of the structure. indirectionsperpendicular to the plane of being broken away `to disclose' some oithe 'rf-" the door, so that when the escutcheon plates vinternalmechanism.

are clamped securely against the faces of Fig. v2 is a verticalsectional view taken the door, removaloi the latch and lockstructransversely through the .'device upon the ture is prevented. line2-2 of Fig. 1.l f f f j Another object isr the provision oit alatch Fig.3 is a horizontal sectionalview taken "5 and lock wherein a single boltserves as both upon the linev 3-3 of Fig. 2;

the latching and the locking bolt, and where- Fig. 4 is a verticalsectional Yview taken in-themeans for locking the bolt in eX- in theplane of the door upon the line 444 tended position, so as to preventopening oi o1 Fig. 3'. Y Y .the closure with which the device is associ-Fig. 5V is a transverse vertical sectional l carried by and-is normallyretained within v Fig.6 is a vertical sectional view taken the shaftwhereon the doorknobs are' inthe plane-"of an automobile "door, andmounted. i showing in side elevation a modified formi Another object isthe provision of` a latch of 'theflockand latch of my invention, porandlock having the above described charactions of the figure being brokenaway to gg teristics, and which is also provided with reduce its length.i means for retaining the. bolt in withdrawn Figs. 1 to 5 inclusiveshow.' one modificaposition when the closure is moved vfrom tion of myimprovedfand simplilied latch closed position, thereby eliminatingthe'an'- and lock mechanism operatively mounted noyance frequentlycaused by the protrudwithinv a door 11 which is hingedly mounted 90 ingend of the bolt when the door is open. in cooperative` relationship witha door Another object is to provide a latch and frame 12in the usualmanner. The suplock as described, in which'the knob shaftporting-structure wherein theoperative parts is journaled solely in thebasket structure, or' the latch are mounted is nin thetorm of a I r andnotl in the escutcheon plates asin the basket 13 which comprisesrigidly, and pre'- 195 case of the conventional latch and lock. erablyintegrally, joined side wallsv 14 held A further object is to provide adoor latch lin spaced parallel relationship by inner and and lock havingkey-operated means AJr'or reouter end walls 16 and 17, respectively, andleasing the lock from the outside of the door7 preferably an auxiliaryweb 18 extending and in which this key-operated means auto-y across thespace 19 between the sidewalls ated, by others than authorized persons,is view taken upon the line 5-5o-Fig-4. @Q

14, this web 18 being parallel to the end walls 16 and 17 On the innerface of each of the side walls 14, and spaced slightly from the outerend wall 17, beads 21 are provided, these two beads being in alinementwith each other, as best shown upon Fig. 3.

A bolt 23 is reciprocably mounted for movement longitudinally withrespect to the basket structure 13, being slidably disposed withinalined apertures 24 and 26 in the end wall 17 and the web 18, and thisbolt 23 is continually urged outwards by means of a coil spring 27 whichis under compression between the web 18 and a shoulder 28 on the bolt23. Then the-'bolt 23 is moved by the spring 27 to its-outer extreme ofmovement, its outer end projects far enough from the outer edge 29 ofthe closure 11 to be received within the socket 31v of a keeper 32 whichis rigidly secured to the associated jamb 33 of the door frame 12.However, means are provided for retaining the bolt 23 in retractedposition at all times when the door V11 is moved from closed position.Guided for vertical movement between the beads 21 and the outer end wall17 of the basket structure 13 is a retaining plate 36 having an enlargedaperture 37 therein, through which the bolt 23 extends. The bolt 23 isprovided with an annular groove 38 adapted to come into registry withthat portion of the plate 36 within which the aperture 37 is provided,when the bolt 23 is fully retracted, permitting the upper edge of theaperture 37 to enter the groove 38 and thus hold the bolt 23 againstbeing thrust outwards by the spring 27. The plate 36 is continuallyurged toward that position in which the upper edge of the aperture 37seats within the groove 38, by means of a coil spring 39 undercompression between the upper edge of the plate 36 and a flange 41extending inwards from the outer zend wall 17. Hence, whenever the boltV23y is retracted so as to permitopening the door 11, the plate 36 willengage the bolt 23 and prevent its being thrust outwards again until theplate 36 is moved to releasing position, for which purpose a cam 42 isprovided upon the lower edge of the plate 36. A rod y43 is slidablymounted in the side walls 14 of the basket structure 13, and has atleast one end 44 projecting through the associated side wall far enoughto engage the jamb 33 as the door completes its closing movement, so asto push the rod 43 towardthe left, as viewed upon Fig. 5. The cam 42 ofthe plate 36 seats within a notch 46 in the rod 43 when the plate 36 isin its lowermost position, but the cam 42 and the notch 46 are so shapedthat when the rod 43 is pushed as hereinabove described, the cam 42 willbe forced outV of the notch 46, thus moving the plate 36 upwards toremove the upper edge of the aperture 37 from the groove 38, whereuponthe spring 27 may project the bolt 23 into latching position.

The inner end 51 of the bolt 23 is bifurcated, providing upper and lowerlegs 52 and 53, respectively, adapted to pass on opposite sides of theknob shaft 54. This shaft comprises a central barrel portion 56, whichis of tubular construction, inasmuch as it has an axial bore 57therethrough. The barrel 56 is journaled within alined holes 58 in theside walls 14 of the basket structure 13, and is provided at each endwith a tubular extension 59, cach of which is adapted to receive theshank 61 of a knob 62 which is slidably receivable thereon. Each ofthese shanks 61 is provided with one or more projecting bosses 63adapted to be received within complementary notches 64 in the associatedend of the central enlarged portion of the barrel 56, whereby rotarymotion of the knob will iinpart similar motion to the remainder of theknob shaft 54.y A lug 66 rigid with the central portion of the barrel 56seats within a recess 67 in preferably the upper leg 52 of thebifurcated end 51 of the bolt 23, so that when the shaft 54 is turned incountcrclockwise motion, as viewed on Fig. 4, the bolt 23 will beretracted. f

The enlarged portion of the `barrel 56 is provided with a transversehole 71, which is blind at one end 72. A locking detent 73 isreciprocably mounted in this transverse hole 71, and is continuallyurged radially outwards from the barrel 56 by means of a coil spring 74which is underoompression .between the blind end 72 of the-'hole 71 andthe inner end of the datent 73. The detent 73, however, is of suchlength that when it is retracted it is entirely contained within thehole 71.

This hole 71`is so positioned in the barrel 56 that when the bolt 23 isextended the hole 7l. is disposed substantially vertically. A socket76is the lower leg 53 ofthe bolt 23, in such position that it is inregistry with the hole 71 when the bolt 23 is extended. Hence, theassociated ends of the detent 73 and socket 7 6 move in oppositedirections when the bolt 23 is being retracted, and for this reasonlocking of the bolt 23 in extended position with extreme rigidity may.be attained by dropping the detent 73 into the socketV 76. Movement ofthe detent 73 with respect to the barrel 56 may be accomplished by meansof a locking shaft 77 which extends through the bore 57 of the knobshaft 54. This shaft 77 also passes .through the hole 71 and through ahole 78 in the inner ond of the detent 73. This hole 78 is at least aslarge as the cross sectional area of the shaft 77, although thatvportion 79 of the shaft 77 which normally engages within the hole 78 ofthe detent 73 is flattened at one formed in the upper surface of1,919yre3 side so that it is of substantially semiof the portion 7.9 yofthe shaft'77 is turned vtoward the blind end 72 of the hole 71, the

detent 73 will be pushed outwards from the hole 71 by its spring 74. Thelocking shaft "7 through the knob 62, which is disposed upon groove 82the. interior side of the door 11, and is provided with an auxiliaryknob 81 which may be grasped by the fingers to permit rotary motion ofthe locking shaft 77 without turning the larger knob 62. An arcuate isformed in the under surface of the knob 81, and receives a pin 83 whichis rigid v being of such length that it permits substantially one-sixth(3%) of a complete revolution of the vlocking shaft 77 and being sopositioned in the knob. 81 that when the knob 81 is turned to oneextreme of its motion with respect to the knob 62, the detent 73 will befully extended, and

when the knob 81 is turned to its other eX- vtreme of motion the detent73 will be fully retracted. The other end of the locking shaft 77 isprovided with a shoulder 86, which prefer,- ably is'formed by cuttingaway substantially one-half (1/2) of the shaft 77 adjacent the end,thereby leaving a fiat face extending` substantially diametrically withrespect to the shaft 77. A key-operated lock 87, preferably ofconventional design, is mounted in the outside knob 88,'this lock 87being provided with a barrel 89, which may be turned only by means ofthe proper key. The lock 487 is positioned in such a manner that itsbarrel 89 rotates about an axis offset from that of the locking shaft 77a distance'equal ,to substantially onehalf "(lq) the diameter of theshaft 77 A shoulder91 formed on the inner end of the barrel 89 isadapted to cooperate with the shoulder 86 of the locking shaft 77, so,as to permit withdrawal of the locking det-ent 73 when the barrell 89is turned. The shoulder 86 on the locking shaft 77 is disposedsubstantially vertically when the detent 73 is extended, and theshoulder 91 also is disposed vertically when the 'key whereby the barrel89 may be turned is removed from the barrel. Moreover, the.

parts are so proportioned and arranged that only the upper end of theshoulder 91 is 'adapted to engage the shoulder 86, and adjacent only thelower end of the latter shoulder, so that when thebarrel 89 is turned,this fully retracted until 1 t extends completely with the knob 62, thegroove 82 Y engagement between the Ashoulders will effect sufficientrotationf'of the shaft 77 tol cause retraction of the detent 7 3,'whereupon kthe shoulder 91 will.A become disengaged from the shoulder86, permitting continued rotation of the barrel 89 through a completerevolution, so thatthe key may be removed therefrom. However, thelocking shaft 77 -ceasesto rotate when disengagement between theshouldersI l91 and. 86 occurs, and remains in that position inv whichthe detent 73 is itis again turned to detent-extending position by means'of the `knob `82 upon the inside .of the door. The purpose of thisarrangement is to make it possible to. unlock the door from the outsideby means ofthe proper key and to remove Y the key without .again settingthe vlocking mechanism. In other wordsthe device can again be lockedonly by the consciouseflort of the operator by manipulation of the knob81, which isaccessible from only the insideV of the door.

The latch andlock'of the present invention is providedV with escutcheonplates 96 and 97, which are Vof sufficient size to extend beyonditheupper, lower .and innerk edges of lthe basket structure 13.. The plates96 and 97 mayterminate short 'of the youter edge of the basket, or theymay beprovided with in'- wardly offset extensions- 98 engagingtheassociated side walls 14 of the basket structure 13, as clearly shownupon Fig.'3. l These offset extensions98 are each provi'dedtfwith a Ygroove 99 on Vthe inner surface, within which va complementary bead 101von the 'outer surface ofthe associated sidewall 14 seats. Thisengagement permits motion of the escutcheon plates 96 and 97 in adirection perpendicular,toftheir planes, butv holds the escutcheonplates against .movement within their respective planes and Withrespectto `the basket structure.-V The lsame effect 1s attained by means-of aplurality ofstay bolts 102, 'the heads 103V of which :are-accessibleinteriorly of the door,` andthe other ends. of which are threaded intosockets 104 l formed .on the inner surface of they escutch-f ,eon plate96fwhich is on the loutside ofthe door. These stay bolts 102 passthrough suitably positioned holes 106 in the side walls14 of the basketstructure 13.

That end l44 of the releasing rod 43 which .isv engageable with the jamb33, extends through the associated offset extensionl 98 of theescutcheon plate 96, so that 'the` presence of the extension 98 does notinterfere. with the normal operation of release ofthe bolt 23 when thedoor is closed.

Instead of being fastened to the barrel 56, the shanks 61 .of the knobs62 are retained against axial movement with respect thereto by means ofplates 111, one of which is .pivotally mountedv upon the interiorsurface lof each of the escutcheon plates 96, 97;.vv Each sembled. ftightened of these plates 111 is adapted to drop by its own weight intothe upper portion of an annular groove 112, which is provided in theshank 61 of the associated knob 62 when that shank has been thrust toits inner extreme of movement with respect to the barrel 56. Hence, theknobs 62 can be removed only by dismounting the entire latch and lockmechanism from the door 11 and inverting it, causing the plates 111 todrop out of the grooves 112. Y f Y The basket structure 13 is adapted tobe received in a recess 116 which is let into the edge 29 of the door11. This recess may easily be formed either by hand, or at the mill whenthe door is constructed. It should be understood that my inventioncontemplates providing doors With these recesses 116 withstandarddimensions, so that my improved latch and lock may be mounted inoperative position upon the door Within a minimum amount `oftiine andwith a minimum expenditureof labor. The recess 116 -is rectangular 1nconfiguration, and 1s comfi plementary in shape to the basket structure13, which, therefore, may be slipped into the recess 116 from theedger29 of the door, with the escutcheon plates 96 and 97 separated`suiiiciently to permit them to overlap the edges of the recess 116. Therecess 116 is of such depth that the outer end wall 17 of the basket 13lies flush with the edge 29 of the door When. the parts are thus as- Thestaybolts 103 may then be to clamp the escutcheon plates 96 and 97against the faces of the door 11, thus securely anchoring the latch andlock device inoperative position.

inasmuch as the operation of'each of the several .parts of Lmy latch andlock has been described hereinabove in conjunction with the descriptionof the construction thereof, it is deemed unnecessary to include herein'a further statement with respect to the manner in which the lock isemployed.

Fig. 6 shows a slightly modified form of means for holding the boltretracted. while the door is open, and for automatically releasing theVboit when the vdoor is closed.

:if This modification is especially adapted for use in conjunction witha door 121 commoni :ly provided-upon an automobile. A bolt jection 128on the plate 126 is provided 122 is reciprocably mounted within asuitable basket structure 123, preferably of conventional design, and isprovided with a notch 124y in its upper edge. A retaining plate 126 isprovided with a projection 127 adapted to'drop into the notch 124 whenthe bolt 122 is retracted. However, another prowith a notch 129 in itsunder surface, and a rod 131 extending parallel with and immediatelyabove the bolt 122 carries a cam 132 which cooperates with the notch 129insuch a manner that when the rod 131 is moved to the left, as viewedupon Fig. 6, the plate 126 will be raised to lift the projection 127 outof the notch 124, vwhereupon a spring 133 is enabled to project the bolt122 into latching position.

The rod 131 extends .in the plane of the door entirely thereacross, andthrough the hinged edge 136 thereof, so that its projecting end 137 willengage the hinged edge of the door frame when the door closes, and thuscause the rod 131 to be pushed to the left, as viewed upon Fig. 6, atthis time. CooperativeV with the projectingend 137 of the rod 131 is anauxiliary rod 138 which Xtends downward from the rod 131 through thelower edge of the door 121. The lower edge of the door frame is providedwith an inclined strike plate (not shown) with which the lower end ofthe rod 138 is adapted to engage when the door closes, pushing the rod138 upwards. rlhe upper end of the rod 138 is provided with an inclinedsurface139 cooperative with an inclined surface M1, which is providedupon a collar 1112 rigidly secured to this upward motion of the rod 138will eliect motion of the rod 131 to the left, as viewed upon Fig. 6.Hence, if the hinged mounting of the door 121 is such that a materialspace is left between the hinged edge 136 of the door and the associatededge of the door frame, when the door is closed, thereby preventingengagement of the end 137 of the rod 131 with the door frame, theengagement of the rod 138 with the bottom of the door frame `will effectsimilar release of the bolt 122.

Ait is to be understood that thel details of the invention as hereindisclosed, are subject to alteration within the spirit or scope f of theappended claims.

I claim: 1; In a door latch a basket 'iongitudinally thereof, a shaftextending transversely of said basket structure and journaled therein,means interconnecting said bolt and shaft for retracting said bolt whensaid shaft turned, a knob slidable axially onto each end of said shaft,means on said shaft -engageable by each .of said knobs for turning theshaft thereby, andgravity operated means for holding each of said knobsagainst axial displacement from said shaft. v

2; In a door latch, an integral basket structure, a bolt reciprocablelongitudinally thereof, a shaft extending transversely of said basketstructure and journaled therein, means interconnecting said bolt andshaft for retractiug said blt when said shaft is 'l' turned, anescutcheon plate disposed upon each side of said basl-:et structure andhaving a hole therein in alinement with said shaft, a knob associatedwith each of said plates and having` a shank extending loosethe rod 131,so that l structure, a bolt reciprocable longitudinally thereof, a shaftextending transversely of said basket structure and journaled therein,means interconnecting said bolt and shaft |for retracting said bolt whensaid shaft is turned, an escutcheon plate disposed upon each side ofsaid basket structure and having a hole therein in alinement with saidshaft, means securing said escutcheon plates to said basket structure7said securing means being expansible to permit variation in the distancebetween said plates but holding said plates against movement withintheir respective planes with respect to said basket structure, a knobassociated with each of said plates and having a shank extending looselythrough the hole in the associated plate, each of said shanks beingslidable onto the associated end of said shaft, means interlocking eachshank with said shaft forrotary motion therewith, and a locking platepivotally mounted on the inner face o f each of said escutcheon platesand adapted to enter an annular groove in the associated shank to holdthe associated knob against axial displacement from said shaft.

4. In a latch for a doorhaving a recess let into an edge thereof, abasket slidable into said recess from said door edge, escutcheon platesmounted on said basket for adjustment perpendicularly to their planes tocompensate for Variation in the thickness of the door, said platesextending beyond the edges of said basket to embrace the ,faces of thedoor about said recess, and means for clampinglsaid plates onto saiddoor.

5. In a latch and lock, a reciprocably Y mounted bolt, a tubular shaftdisposed perpendicularly with respectto said bolt and mounted for rotarymovement, said tubular shaft having a socket transversely to its axis, aspring pressed detent in the socket and adapted to engage and lock saidbolt against retracting movement, said detent having a bore, a lockingshaft rotatable within said tubular shaft and passing through the boreof the detent, a cam on the locking shaft engaging the detent to retractthe detent from said bolt, and means on each end of the locking shaftvto rotate same.

6. Ina latch and lock, a reciprocably mounted bolt having a recessadjacent its inner end, a tubular shaft disposed perpendicularly withrespect to said bolt and mounted for rotary movement, said tubular shafthaving a socket transversely to its axis, a spring pressed detent in thesocket and adapted to engage the recess in said bolt to lock said boltagainst retracting movement, said detent having a bore, a locking shaftrotatable within said tubular shaft and passing through the bore of thedetent, a cam on the tent out ofthe recess of the locking bolt, andmeans on each end of the locking shaft to rotate same.

SHERMAN T. ALLEN.

locking shaft for moving the de-

